<template>
  <div>
    <div class="search">
      <input
        class="search-input"
        type="text"
        placeholder="输入城市名或拼音"
        v-model="keyword"
      >
    </div>
    <div
      class="search-content"
      ref="search"
      v-show="keyword"
    >
      <ul>
        <li
          v-for="item of list"
          class="search-item border-bottom"
          :key="item.id"
        >{{item.name}}</li>
        <li
          class="search-item border-bottom"
          v-show="hasNoData"
        >
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import BScroll from 'better-scroll'
    export default {
        name: "CitySearch",
      props:{
          cities:Object
      },
      computed:{
        hasNoData (){
          return !this.list.length
        }
      },
      data (){
          return {
            keyword:'',
            list:[],
            timer:null
          }
      },
      watch:{
          keyword (){
            if (this.timer){
              clearTimeout(this.timer)
            }
            if (!this.keyword){
              this.list =[]
              return
            }
            this.timer=setTimeout(()=>{
              const result = []
              for (let i in this.cities){
                this.cities[i].forEach((value)=>{
                  if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1 ){
                    result.push(value)
                  }
                })
              }
              this.list = result
            },100)
          }
      },
      mounted(){
        this.scroll =new BScroll(this.$refs.search)
      }
    }
</script>

<style lang="stylus" scoped>
  @import "~css/varibles.styl"
  .search
    height :.72rem
    padding :0 .1rem
    background :$bgColor
    .search-input
      box-sizing :border-box
      width :100%
      height :.62rem
      padding :0 0.1rem
      line-height :.62rem
      text-align :center
      border-radius :.06rem
      color :#666
  .search-content
    z-index:1
    overflow: hidden
    position:absolute
    top:1.58rem
    left:0
    right:0
    bottom:0
    background :#eee
    .search-item
      line-height : .62rem
      padding-left : .2rem
      background :#ffffff
      color:#666
</style>
